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Patented April 9, 1867.

NAPETERS, PHoTD-LITHOGRAFHER. WASHINGTDN. D C.

LEVI C. AND JOHN4 M. SCHERMERHRN, F NRTH til-AGE, NEW YURK. etters .Patent No. 63,755, dated April 9, 1857 EMPRGVEMENT N MILE VATS.

@Llp dgshulr referat it it tips ettert patent nu mating piti; tt tip ramt TO ALL WHOM IT MAY CONGERN:

Be it known that we, Lav: C. Scnnnnnnuonn and JOHN M. SCHERMERHORN, of North Gage, in the county of Oneida, and State of New York, have invented certain new and useful improvements in Apparatus iorHeatu ing and Cooling Milk for Cheese-Making; and We do hereby declare the following to be a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 represents a longitudinal vertical section through the =rat, and heating and cooling chamber below it.

Figure 2 represents the bottom of the outside vat, the inner vat being removed to better show the steam and cold-water `pipes and slatted bottom.V

Figure 3 represents a vertical transyerse section through the apparatus, taken at the red line :v x, of fig. ZZ.

Similar letters of reference, Where they occuriu the separate gures, denote like parts of the apparatus in all the drawings.

The general, if not universal, way of heating milk for cheesemaking is by the indirect heat of or from hot water contained between the outer and innerjacket. Instead of using hot water we propose to use the direct application of steam to the exterior of the inner vat, by which mode of heating we gain-not only time but can heat the milk quite as regularly throughout the vat, Whilst we can cut eil the heat instantaneously, which is very important in the process, and which cannot be done when hot Water used as a medium for trans`1 mitting the heat to the milk. We also run a `cold-Water pipe through under the inner vat,eperforated with a series of holes, so that as instantaneously as the steam 'is cut oir, just as quickly the cold water can be let on and thc cooling commenced; the two operations of heating by steam, cutting off the heat, :and applying the cold water, very much expediting the process or preparation of the milk for cheese-making.

Our invention consists in the use of steam alone as a heating medium aud cold water as a cooling medium, both ybeing applied in the space between the exterior and interior rats by suitable pipes and openings therein, and disseminated throughout said space by means that will be hereafter explainedJ To enable others skilled in the art to make and use our invention, we will proceed 13o-describe the same with reference to the drawings.

A represents an external wooden "vat, such as are commonly used cheese dairies or in cheese-making. finto the interior of this vat, resting upon its 'top portion, is placed the usual tin or metal vat B for containing the milk to be heated, there being aspace, tia a, between said vets for the heat or Water to circulate through. Steam is introduced into the space a by means ofl a steam pipe, leading from any steam generator or boiler, and this steam pipe, after it enters into the space between the vats, branches into two pipes, as shown by the dotted lines in iig. 2, and extend around on both sides underneath the interior vat. The pipe b is furnished with holes or slots, or both, for the steam torpass through into the space a, and these openings may increase in area, as they are more remote from where the steam enters, so as to make up by increased quantity what `is lost by density. Over the steam pipes b the broad strip d of the slatted bottom lies, and opposite the openings in the steam pipes delico-tors e, iig. 3, are arranged to prevent the steam from striking the metal vat at one single point, and to disseminate it regularly throughout the entire space a. The slatted bottom ci is supported upon pcgs,f, which raise it above the steam and Water pipes; and upon the slatted bottom the inner vat B rests. The cold-water pipe z' occupies a central position in the vat, and it, too, is furnished 'with holes or openings so that jets or spray may bethrown against the bottom of' the inner vat B, when the steam or'heat has been shut ed, and it is necessary or expedient to quickly cool the contents of the inner vat. The steam pipes b are elevated from the bottom of the exterior vat suciently to keep them out of or above what water may accumulate from condensation of the steam, and prevent the noise it would make when escaping through water, The outer vat is furnished with the usual draw-oif pipes or cocks, as at m n, g. 1, for emptying it when necessary, and may have a hinged foot, C, at one end, which, when folded up, and that end allowed to-rest upon a shorter support, r, tips the vat, as shown in red lines, g. 1, to drain or draw it ofi". The innerivat is furnished with handles, s,by which it may be readily removed or replaced. The ope'nins in the water pipe may also, like those in the steam pipes, increase iu area from inlet to outlet for cooling uniformly.

Having thus fully described our invention, what We claim therein as new, and desire to secure by Letters Patent, is

The perforated stetm and water pipes, introduced into the space between the exterior and interior )tats for the purpose of heating regularly with steam, and instantly (when'necessary) shutting a' the steam and applying f the inner vat by means and for the purposes herein described.

LEVI 0. SCHERMERHORN, JOHN M. SCHERMERHORN.

jets ef cold water to cool the contents o VWitnesses:

JOHN G. BARRY, ORRIN W. SMITH. 

